Breadcrumb Home > Thesaurus > C Synonyms of costanoan Find synonyms for: Noun 1. Costanoan, Penutian usage: a member of a North American Indian people living in coastal California between Monterey and San Francisco Bay 2. Costanoan, Penutian usage: a Penutian language spoken by the Costanoan WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of costanoan (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: spelunk Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language